CN106437995A - Automobile supercharged engine cooling system and control method thereof - Google Patents
Automobile supercharged engine cooling system and control method thereof Download PDFInfo
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- CN106437995A CN106437995A CN201610969681.1A CN201610969681A CN106437995A CN 106437995 A CN106437995 A CN 106437995A CN 201610969681 A CN201610969681 A CN 201610969681A CN 106437995 A CN106437995 A CN 106437995A
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- water pump
- temperature
- coolant
- thermoregulator
- cylinder cap
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- 238000001816 cooling Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000002826 coolant Substances 0.000 claims description 82
- 230000005855 radiation Effects 0.000 claims description 16
- 238000007872 degassing Methods 0.000 claims description 6
- 239000010705 motor oil Substances 0.000 abstract 2
- 238000005192 partition Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 10
- 230000004087 circulation Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- 230000001839 systemic circulation Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0437—Liquid cooled heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/005—Cooling of pump drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/024—Cooling cylinder heads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Supercharger (AREA)
Abstract
The invention discloses an automobile supercharged engine cooling system and a control method thereof. A radiator is divided by a partition plate into a high-temperature radiator and a low-temperature radiator. An inner water way of an engine cylinder body is divided into an exhaust side cylinder cover water way and a cylinder body and air inlet side cylinder cover water way, wherein the liquid inlet end of the exhaust side cylinder cover water way is connected with a mechanical water pump. The liquid inlet end of the exhaust side cylinder cover water way is provided with a first temperature adjuster connected with the liquid inlet end of the cylinder body and air inlet side cylinder cover water way. The liquid outlet end of the exhaust side cylinder cover water way and the liquid outlet end of the cylinder body and air inlet side cylinder cover water way are sequentially connected with a warm air core and an engine oil cooler through a first water return pipe, wherein the engine oil cooler is connected with the mechanical water pump. The first water return pipe is connected with a second water return pipe through a second temperature adjuster, and the second water return pipe is connected with the high-temperature radiator. The automobile supercharged engine cooling system comprises an electronic water pump, the electronic water pump is connected with the liquid inlet end of a turbine supercharger and the liquid inlet end of an intercooler, and the liquid outlet end of the turbine supercharger and the liquid outlet end of the intercooler are connected with the liquid inlet end of the low-temperature radiator. By means of the automobile supercharged engine cooling system and the control method thereof, engine cylinder body and cylinder cover cooling can be accurately controlled, and the cooling performance of various loops is achieved.
Description
Technical field
The present invention relates to automobile turbo engine, and in particular to a kind of automobile turbo engine cooling system and its controlling party
Method.
Background technology
As countries in the world are limited to automobile discharge capacity and the increasingly strict of discharge, it is fashion trend that electromotor reduces discharge capacity.
In this case, it is desirable to obtain the performance of more preferable power, supercharging technology is the most common solution of application.Turbocharging is sent out
The electromotor of the standby turbocharger of motivation assignment.Turbocharged engine increases air inflow, the pressure of air by compressed air
Increase, with density, more fuel that can burn, accordingly increase fuel quantity and adjustment engine speed, electromotor can be increased
Output and moment of torsion.After supercharging, electromotor pressure and temperature operationally is all raised significantly, therefore engine life
Can be not shorter through the electromotor of supercharging than same discharge capacity, and mechanical performance, greasy property can all be affected, and this also exists
Turbocharging technology application on the engine is limited to a certain extent.Therefore, in time cylinder is carried out lowering the temperature extremely important.
The effect of charge air cooler is the high temperature air temperature after reducing supercharging, to reduce the thermic load of electromotor, improves air inflow, and then
Increase the power of electromotor.For engine with supercharger, charge air cooler is the important composition part of pressure charging system.There is tables of data
Bright, under the conditions of identical air-fuel ratio, the temperature of pressurized air often declines 10 DEG C, and engine power can improve 3%-5%.
Energy-saving and emission-reduction are always the target of automobile vendor's pursuit, under the requirement of current increasingly strict Abgasgesetz, should
Target is more paid attention to further.Existing engine-cooling system, typically coolant enter cylinder block through water pump, then pass through
Cylinder cap enters thermoregulator, carries out the final back water pump of large and small cycles by thermoregulator.Or, coolant is introduced into cylinder by water pump
Lid, enters back into cylinder body water jacket, then carries out large and small cycles by thermoregulator, finally flow back to water pump.
Engine-cooling system need to maintain electromotor in suitable operating temperature range, but cold for conventional engines
But for form, or the temperature of cylinder cap is too high, otherwise be cylinder body temperature slightly lower.This main cause is traditional cooling system
System can not be independent carry out temperature control to cylinder cap and cylinder body, usually cylinder block and head water jacket series connection；I.e. coolant first passes through cylinder
Then body controls engine outlet water temperature through cylinder cap finally by a thermoregulator again, so the temperature of cylinder cap and cylinder body can not
Control so not only affects the fuel consumption of electromotor and the row of output but also impact electromotor in rational temperature spot
Put.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, providing and meeting engine with supercharger cooling requirement, accurate control
Engine cylinder-body Cooling of Cylinder Head processed, reduces engine emission and electromotor initial wear, meets the automobile of each loop cooling performance
Engine with supercharger cooling system and its control method.
To achieve these goals, the technical solution used in the present invention is：
This kind of automobile turbo engine cooling system, the mechanical water pump for connecting including expansion tank and the expansion tank, starts
Machine cylinder interior water channel and radiator, the radiator is divided into high temperature heat sink and low-temperature radiator by dividing plate；Described
Motivation cylinder interior water channel is divided into exhaust side cylinder cap water channel and cylinder body and the air inlet side cylinder head water of liquid feeding end and mechanical water pump connection
Road；The liquid feeding end of the exhaust side cylinder cap water channel is provided with the first homoiothermic being connected with cylinder body with the liquid feeding end of air inlet side cylinder cap water channel
Device；The liquid outlet of the liquid outlet of the exhaust side cylinder cap water channel and cylinder body and air inlet side cylinder cap water channel all by the first return pipe with
Heater cores and the oil cooler with mechanical water pump connection are sequentially connected；On first return pipe by the second thermoregulator even
The second return pipe being connected to high temperature heat sink connection；Including the electronic water pump for connecting with the expansion tank, the electronic water pump
It is connected with the liquid feeding end of turbocharger and charge air cooler respectively, the liquid outlet and low temperature radiation of the turbocharger and charge air cooler
The liquid feeding end connection of device；The liquid outlet of the low-temperature radiator and electronic water pump connection.
The liquid feeding end of second thermoregulator is provided with the first escape pipe, and the liquid outlet of the low-temperature radiator is provided with second
Escape pipe；First escape pipe and the second escape pipe all connect with the expansion tank.
Check valve is equipped with first escape pipe and the second escape pipe.
The liquid feeding end of the charge air cooler is provided with air removing valve.
The control method of this kind of automobile turbo engine cooling system, detailed process is：
(1) during engine start, when coolant temperature and engine speed are below setting value, the first thermoregulator is closed
Close, coolant flows through exhaust side cylinder cap through mechanical water pump, by the first return pipe, heater cores and oil cooler passed through,
It is then return to mechanical water pump；
While electronic water pump works, coolant flows to turbocharger and charge air cooler, turbocharger and charge air cooler is entered
After row cooling, coolant enters low-temperature radiator and is radiated, and the coolant for flowing out from low-temperature radiator enters electronic water pump and enters
Enter circulation, low temperature radiation system is opened；
(2), after engine warm-up, when temperature rises to design temperature, the first thermoregulator is opened；Coolant is in mechanical water pump
Driving under, cylinder body and cylinder cap are flowed to air inlet side cylinder cap water channel by exhaust side cylinder cap water channel and cylinder body, by the first backwater
Pipe, passes through heater cores and oil cooler, is then return to mechanical water pump；
Low temperature radiation system works on；
(3) when temperature rises to design temperature, the second thermoregulator start open, coolant under the driving of mechanical water pump,
Cylinder body and cylinder cap are flowed to air inlet side cylinder cap water channel by exhaust side cylinder cap water channel and cylinder body, while coolant passes through the second backwater
Then pipe flow flows back to mechanical water pump toward high temperature heat sink；The cooling fan of radiator is opened, to distribute coolant heat；
Low temperature radiation system works on.
In (1), when coolant temperature is below 70 DEG C and when engine speed is less than 3000r/min, the first homoiothermic
Device cuts out.
In (2), when coolant temperature reaches 70 DEG C, open at the beginning of the first thermoregulator, when coolant temperature reaches 85 DEG C, the
One thermoregulator standard-sized sheet.
In (3), when coolant temperature reaches 92 DEG C, open at the beginning of the second thermoregulator, when coolant temperature reaches 106 DEG C,
Second thermoregulator standard-sized sheet.
In (1)-(3), electronic water pump is opened more than electronic water pump according to coolant temperature control work, coolant temperature
Marginal value is opened, electronic water pump is started working, low temperature radiation system is opened.
In (1)-(3), coolant is by the first escape pipe for being connected with expansion tank and the second escape pipe and air removing valve
Carry out degasification.
It is an advantage of the current invention that：This kind of automobile turbo engine cooling system and its control method, can realize starting
Warming-up refrigerating mode during machine warming-up, can realize partial circulating refrigerating mode control during engine warms, moreover it is possible to realize starting
Systemic circulation refrigerating mode control when machine temperature is raised, while the deflation of coolant can be realized, it is ensured that whole system is in pressure
Power steady statue；Disclosure satisfy that engine with supercharger cooling is required, precise control engine cylinder-body Cooling of Cylinder Head, reduces electromotor row
Put and electromotor initial wear, meet each loop cooling performance.
In the present invention, cylinder cap, cylinder body are cooled down respectively, coolant temperature fast lifting during starting, while reduce thermostat shaking
Swing, the pressure oscillation of coolant in minimizing system；Layering cooling makes electromotor enter operating temperature earlier, while can also be faster
In-car warm braw is provided；And then reduce vehicle fuel consumption, enhance the reliability of system；Arrange low-temperature radiator to charge air cooler,
Turbocharger is sufficiently cool, improves air inflow, improves engine with supercharger power；Conventional diffusers by setting up hydroecium dividing plate,
It is divided into two separate units, large volume of bottom so reduces system as high temperature heat sink, top as low-temperature radiator
Air intake resistance, arrangement is easy, saves front deck space.
Description of the drawings
Below each content of width accompanying drawing expression of description of the invention and the labelling of in figure are briefly described：
Fig. 1 is automobile turbo engine cooling system schematic diagram of the present invention.
Electromotor first stage cooling circuit schematic diagram in Fig. 2 automobile turbo engine cooling system of the present invention.
Electromotor second stage cooling circuit schematic diagram in Fig. 3 automobile turbo engine cooling system of the present invention.
Electromotor phase III cooling circuit schematic diagram in Fig. 4 automobile turbo engine cooling system of the present invention.
The labelling of above-mentioned in figure is：
1st, expansion tank, 2, mechanical water pump, the 3, first thermoregulator, 4, exhaust side cylinder cap water channel, 5, cylinder body and air inlet side cylinder cap
Water channel, the 6, second thermoregulator, 7, heater cores, 8, oil cooler, 9, cooling fan, 10, high temperature heat sink, 11, low temperature dissipates
Hot device, 12, electronic water pump, 13, turbocharger, 14, charge air cooler, 15, vent valve, the 16, first return pipe, the 17, second backwater
Pipe, the 18, first escape pipe, the 19, second escape pipe.
Specific embodiment
Below against accompanying drawing, by the description to optimum embodiment, the specific embodiment of the present invention is made further in detail
Thin explanation.
As shown in figure 1, this kind of automobile turbo engine cooling system, including the machinery that expansion tank 1 and expansion tank 1 connect
Water pump 2, engine cylinder-body internal water channel and radiator, radiator is divided into high temperature heat sink 10 and low-temperature radiator by dividing plate
11；Engine cylinder-body internal water channel is divided into exhaust side cylinder cap water channel 4 and cylinder body with air inlet side cylinder cap water channel 5, exhaust side cylinder head water
The liquid feeding end in road 4 and mechanical water pump 2 connect；The liquid feeding end of exhaust side cylinder cap water channel 4 is provided with and cylinder body and air inlet side cylinder cap water channel 5
Liquid feeding end connection the first thermoregulator 3；The liquid outlet of exhaust side cylinder cap water channel 4 and cylinder body are gone out with air inlet side cylinder cap water channel 5
Liquid end is all sequentially connected with heater cores 7 and oil cooler 8 by the first return pipe 16, oil cooler 8 and mechanical water pump 2
Connection；The second return pipe 17 for connecting with high temperature heat sink 10, the first return pipe 16 and second is connected with first return pipe 16
Return pipe 17 is connected by the second thermoregulator 6；Including the electronic water pump 12 for connecting with expansion tank 1, electronic water pump 12 respectively with whirlpool
The liquid feeding end connection of wheel supercharger 13 and charge air cooler 14, the liquid outlet and low-temperature radiator 11 of turbocharger 13 and charge air cooler 14
Liquid feeding end connection；The liquid outlet of low-temperature radiator 11 and electronic water pump 12 connect.
In order to reduce cylinder block and head temperature in time, low-temperature radiator 11 is set, and coolant is provided by electronic water pump 12 and follows
Ring power source, intakes from 1 water supplement port of expansion tank.The hydroecium of radiator is divided into upper and lower two parts by dividing plate by radiator, this
Two parts are independent mutually, and top is allocated as low-temperature radiator 11, and bottom is allocated as high temperature heat sink 10.As low-temperature radiator 11
Upper volume less, so can arrange an extra low-temperature radiator 11 less, so as to reduce system air intake resistance, save
Front deck space, simplifies assembling.
Water channel inside engine cylinder-body is divided into two parts, exhaust side cylinder cap water channel 4 and cylinder body and air inlet side cylinder cap water channel
5.Two parts water channel is independent mutually, by the unlatching of the first thermoregulator 3 that is arranged on exhaust side cylinder cap water channel 4 and closure, control
The coolant of exhaust side cylinder cap processed flows to cylinder body and air inlet side water channel；By unlatching and the closure of the second thermoregulator 6, control cylinder body
And the coolant of cylinder cap enters high temperature heat sink 10, control the unlatching of systemic circulation.First thermoregulator 3 just opens temperature setting for 70
DEG C, 85 DEG C of standard-sized sheets；The first temperature setting of opening of the second thermoregulator 6 is 92 DEG C, standard-sized sheet when 106 DEG C.Two thermoregulators control logical respectively
Toward cylinder body and air inlet side cylinder cap and two cyclic water channels of exhaust side cylinder cap, as cylinder body is different with the temperature characterisitic of cylinder cap, two
The opening temperature of individual thermoregulator is also different.In air inlet and the exhaust side of cylinder cap, water channel separates isolation design.Double thermoregulators/bis- water
Road design can make electromotor enter operating temperature earlier, while in-car warm braw faster can also be provided, reduce the electromotor initial stage
Toggle weares and teares.
The filling pipe of expansion tank 1 divides two-way using a tee T, and a road connects mechanical water pump 2, and a road connects electronic water
The water inlet of pump 12.Coolant after low-temperature radiator 11 is cooled down, enters electronic water pump 12 through a threeway pipe flow, then
Divide two-way, stream enters turbocharger 13 and charge air cooler 14 respectively by a tee T, heat is taken out of and then again by one
Tee T, flows back into low-temperature radiator 11.
This kind of automobile turbo engine cooling system, can realize the cooling cyclic system of turbocharged engine three phases
System control.As shown in Fig. 2 the first stage：When the engine starts, electromotor need as early as possible warming-up to reduce the friction of each parts
And warm braw is provided during cold weather as early as possible.When coolant temperature is below 70 DEG C and when engine speed is less than 3000r/min, cloth
Put the first thermoregulator 3 at the head exhaust side to close；Coolant is only passed through from exhaust side cylinder cap, and stream enters heater cores 7 and machine
Oil cooler 8, returns to mechanical water pump 2；The gas removing pipe that second thermoregulator, 6 liquid feeding end is arranged even carries out degasification toward expansion tank 1, one
Point coolant flows to mechanical water pump 2 by the filling pipe of expansion tank 1；A part flows to electronic water pump 12.In this stage, cylinder body
Do not circulate with coolant in air inlet side cylinder cap, whole cyclic process coolant is pumped out from mechanical water pump 2, comes warm braw
Core body 7, then oil cooler 8 is arrived, eventually pass back to mechanical water pump 2.
The liquid feeding end of the second thermoregulator 6 is provided with the first escape pipe 18, and the liquid outlet of low-temperature radiator 11 is provided with second and goes out
Trachea 19；First escape pipe 18 and the second escape pipe 19 all connect with expansion tank 1.On first escape pipe 18 and the second escape pipe 19
It is equipped with check valve.Gas removing pipe is set at the second thermoregulator 6 and low-temperature radiator 11, by tee T gas removing pipe company at two
Being connected together, even degasification is carried out toward expansion tank 1.Check valve is set in gas removing pipe, is only allowed gas to lead to expansion tank 1, so may be used
So that coolant all participates in cooling circulation.
For improving air inflow, turbocharger 13 and charge air cooler 14 need to maintain suitable temperature.Effect in electronic water pump 12
Under, coolant flows to turbocharger 13 and charge air cooler 14, is that stream enters low-temperature radiator 11 and radiated after its cooling.Coolant
Enter from the water supplement port of expansion tank 1, flow to electronic water pump 12 and be circulated.Electronic water pump 12 controls work according to coolant temperature
Make, once coolant temperature exceedes marginal value, electronic water pump 12 will work.After engine long time big load operation suddenly
During shutdown, heat is easily drastically accumulated.For example, after being travelled on expressway for a long time, after entering service area stop closing electromotor,
The temperature of electromotor and its parts is very high, dynamical system control unit will control electronic water pump 12 work on one section when
Between, allow 13 temperature of turbocharger to drop in suitable scope.At charge air cooler 14, for convenience of degasification to maintain the system suitable
Pressure, arranges an air removing valve in system highest point.That is the liquid feeding end of charge air cooler 14 is provided with air removing valve.
As shown in figure 3, second stage：After engine warm-up, in the engine warms stage, temperature comparatively fast rises, and first adjusts
Warm device 3 will start to open at 70 DEG C, fully open when 85 DEG C.A part of coolant flows through exhaust side cylinder cap, part cooling
Liquid flows to cylinder body and air inlet side cylinder cap, then with exhaust side Cooling of Cylinder Head liquid together, by heater cores 7 and oil cooler 8,
Flow back to mechanical water pump 2.From the point of view of traditional cooling system, it is now that partial circulating is opened.Coolant is driven by mechanical water pump 2,
By water channel flow to cylinder body and with whole cylinder cap.Coolant flows through heater cores 7 and oil cooler 8 through the first return pipe 16,
It is then return to mechanical water pump 2.The continuity of low temperature radiation system coolant is continued cycling through on last stage.
As shown in figure 4, the phase III：Engine temperature boost phase, when coolant temperature is at 92 DEG C, the second thermoregulator
6 start to open, standard-sized sheet when 106 DEG C.With respect to traditional cooling system, systemic circulation is opened.Coolant is from whole gray iron water channel
After circulation, a part flows to high temperature heat sink 10 by the second thermoregulator 6 and is cooled down, and then flows back to mechanical water pump 2；A part
Coolant flows back to mechanical water pump 2 by heater cores 7 and machine oil coolant.The top gear of the cooling fan of radiator is opened, plus
Fast air passage rates, the heat of coolant is taken away.The continuity of low temperature radiation system coolant is continued cycling through on last stage.
The centrifugal pump that electronic water pump 12 is driven using brshless DC motor, pwm pattern, can be according to coolant temperature height
Low realize different rotating speeds, and precise control cryogenic system cooling, it is to avoid energy dissipation.Electronic water pump 12 is coolant pump toward turbine
Supercharger 13 and charge air cooler 14, coolant takes away heat, then flows to low-temperature radiator 11 and is cooled down.Through low-temperature radiator
Coolant after 11 coolings, continuing to flow to electronic water pump 12 carries out next circulation.
The control method of this kind of automobile turbo engine cooling system, detailed process is：
(1) during engine start, when coolant temperature and engine speed are below setting value, the first thermoregulator 3 is closed
Close, coolant flows through exhaust side cylinder cap through mechanical water pump 2, by the first return pipe 16, pass through heater cores 7 and machine oil cooling
Device 8, is then return to mechanical water pump 2；
While electronic water pump 12 works, coolant flows to turbocharger 13 and charge air cooler 14, to turbocharger 13 and
After charge air cooler 14 is cooled down；Coolant enters low-temperature radiator 11 and is radiated, from the coolant that low-temperature radiator 11 flows out
Enter electronic water pump 12 and circulation is entered, low temperature radiation system is opened；
(2), after engine warm-up, when temperature rises to design temperature, the first thermoregulator 3 is opened；Coolant is in mechanical water pump
Under 2 driving, cylinder body and cylinder cap are flowed to air inlet side cylinder cap water channel 5 by exhaust side cylinder cap water channel 4 and cylinder body, by first time
Water pipe 16, passes through heater cores 7 and oil cooler 8, is then return to mechanical water pump 2；
Low temperature radiation system works on；
(3), when temperature rises to design temperature, the second thermoregulator 6 starts to open, and coolant is in the driving of mechanical water pump 2
Under, cylinder body and cylinder cap are flowed to air inlet side cylinder cap water channel 5 by exhaust side cylinder cap water channel 4 and cylinder body, while coolant is by the
Two return pipes 17 flow to high temperature heat sink 10, then flow back to mechanical water pump 2；The cooling fan of radiator is opened, to distribute cooling
Liquid heat；
Low temperature radiation system works on.
In (1), when coolant temperature is below 70 DEG C and when engine speed is less than 3000r/min, the first homoiothermic
Device 3 cuts out.
In (2), 3 aperture of the first thermoregulator is adjusted automatically according to temperature change；Coolant temperature reaches 70 DEG C
When, the first thermoregulator 3 is just opened, when coolant temperature reaches 85 DEG C, 3 standard-sized sheet of the first thermoregulator.
In (3), 6 aperture of the second thermoregulator is adjusted automatically according to temperature change；Coolant temperature reaches 92 DEG C
When, the second thermoregulator 6 is just opened, when coolant temperature reaches 106 DEG C, 6 standard-sized sheet of the second thermoregulator.
In (1)-(3), electronic water pump 12 exceedes electronic water pump according to coolant temperature control work, coolant temperature
12 open marginal value, and electronic water pump 12 is started working, and low temperature radiation system is opened.
In (1)-(3), coolant by the first escape pipe 18 for being connected with expansion tank 1 and the second escape pipe 19 and is removed
Air valve carries out degasification.
This kind of automobile turbo engine cooling system and its control method, can realize warming-up cooling during engine warm-up
Pattern, can realize partial circulating refrigerating mode control during engine warms, moreover it is possible to realize following greatly when engine temperature is raised
Ring refrigerating mode controls, while the deflation of coolant can be realized, it is ensured that whole system is in pressure plateau；Disclosure satisfy that
Engine with supercharger cooling requires that precise control engine cylinder-body Cooling of Cylinder Head reduces engine emission and electromotor initial wear,
Meet each loop cooling performance.
While the present invention can reduce electromotor initial stage toggle mill with precise control engine cylinder-body cylinder cap temperature
Damaging, accelerating warming-up and crew module's heating progress, while reducing engine emission.Low-temperature radiator 11 is set, to turbocharger
13 and charge air cooler 14 sufficiently cool, be separately controlled with engine high-temperature system, in hgher efficiency, reduce energy expenditure.
Obviously the present invention is implemented and is not subject to the restrictions described above, as long as employing method of the present invention design and skill
The improvement of the various unsubstantialities that art scheme is carried out, all within protection scope of the present invention.
Claims (10)
1. a kind of automobile turbo engine cooling system, the mechanical water pump for connecting including expansion tank and the expansion tank, electromotor
Cylinder interior water channel and radiator, it is characterised in that：The radiator is divided into high temperature heat sink and low temperature radiation by dividing plate
Device；The engine cylinder-body internal water channel is divided into exhaust side cylinder cap water channel and cylinder body and the air inlet of liquid feeding end and mechanical water pump connection
Side cylinder cap water channel；The liquid feeding end of the exhaust side cylinder cap water channel is provided with and is connected with the liquid feeding end of air inlet side cylinder cap water channel with cylinder body
First thermoregulator；The liquid outlet of the liquid outlet of the exhaust side cylinder cap water channel and cylinder body and air inlet side cylinder cap water channel is all by first
The oil cooler that return pipe is connected with heater cores and with mechanical water pump is sequentially connected；Pass through second on first return pipe
Thermoregulator is connected with the second return pipe with high temperature heat sink connection；Including the electronic water pump for connecting with the expansion tank, described
Electronic water pump is connected with the liquid feeding end of turbocharger and charge air cooler respectively, the liquid outlet of the turbocharger and charge air cooler and
The liquid feeding end connection of low-temperature radiator；The liquid outlet of the low-temperature radiator and electronic water pump connection.
2. automobile turbo engine cooling system as claimed in claim 1, it is characterised in that：The feed liquor of second thermoregulator
End is provided with the first escape pipe, and the liquid outlet of the low-temperature radiator is provided with the second escape pipe；First escape pipe and second
Escape pipe all connects with the expansion tank.
3. automobile turbo engine cooling system as claimed in claim 2, it is characterised in that：First escape pipe and second
Check valve is equipped with escape pipe.
4. the automobile turbo engine cooling system as described in any one of claim 1-3, it is characterised in that：The charge air cooler
Liquid feeding end is provided with air removing valve.
5. the control method of automobile turbo engine cooling system described in a kind of any one of claim 1-4, it is characterised in that：Tool
Body process is：
(1) during engine start, when coolant temperature and engine speed are below setting value, the first thermoregulator cuts out, cold
But liquid flows through exhaust side cylinder cap through mechanical water pump, by the first return pipe, passes through heater cores and oil cooler, then returns
To mechanical water pump；
While electronic water pump works, coolant flows to turbocharger and charge air cooler, turbocharger and charge air cooler is carried out cold
But after, coolant enters low-temperature radiator and is radiated, and the coolant for flowing out from low-temperature radiator enters electronic water pump entrance and follows
Ring, low temperature radiation system is opened；
(2), after engine warm-up, when temperature rises to design temperature, the first thermoregulator is opened；Coolant is in the drive of mechanical water pump
Under dynamic, cylinder body and cylinder cap are flowed to air inlet side cylinder cap water channel by exhaust side cylinder cap water channel and cylinder body, by the first return pipe, then
Heater cores and oil cooler is flowed through, is then return to mechanical water pump；
Low temperature radiation system works on；
(3), when temperature rises to design temperature, the second thermoregulator starts to open, and coolant passes through under the driving of mechanical water pump
Exhaust side cylinder cap water channel and cylinder body flow to cylinder body and cylinder cap with air inlet side cylinder cap water channel, while coolant passes through the second backwater pipe flow
Toward high temperature heat sink, mechanical water pump is then flowed back to；The cooling fan of radiator is opened, to distribute coolant heat；
Low temperature radiation system works on.
6. the control method of automobile turbo engine cooling system as claimed in claim 5, it is characterised in that：In (1), when
Coolant temperature is below 70 DEG C and when engine speed is less than 3000r/min, and the first thermoregulator cuts out.
7. the control method of automobile turbo engine cooling system as claimed in claim 5, it is characterised in that：In (2), cold
But, when liquid temp reaches 70 DEG C, open at the beginning of the first thermoregulator, when coolant temperature reaches 85 DEG C, the first thermoregulator standard-sized sheet.
8. the control method of automobile turbo engine cooling system as claimed in claim 5, it is characterised in that：In (3), cold
But, when liquid temp reaches 92 DEG C, open at the beginning of the second thermoregulator, when coolant temperature reaches 106 DEG C, the second thermoregulator standard-sized sheet.
9. the control method of automobile turbo engine cooling system as claimed in claim 5, it is characterised in that：(1)-(3)
In, electronic water pump is according to coolant temperature control work, and coolant temperature exceedes electronic water pump and opens marginal value, and electronic water pump is opened
Beginning work, low temperature radiation system is opened.
10. the control method of automobile turbo engine cooling system as claimed in claim 5, it is characterised in that：(1)-(3)
In, coolant carries out degasification by the first escape pipe for being connected with expansion tank and the second escape pipe and air removing valve.
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